EP2421712B1 - Supports d'impression revêtus et leur procédé de fabrication - Google Patents

Supports d'impression revêtus et leur procédé de fabrication Download PDF

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Publication number
EP2421712B1
EP2421712B1 EP20090843775 EP09843775A EP2421712B1 EP 2421712 B1 EP2421712 B1 EP 2421712B1 EP 20090843775 EP20090843775 EP 20090843775 EP 09843775 A EP09843775 A EP 09843775A EP 2421712 B1 EP2421712 B1 EP 2421712B1
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EP
European Patent Office
Prior art keywords
zeolite
slurry
calcium carbonate
precipitated calcium
particles
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
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EP20090843775
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German (de)
English (en)
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EP2421712A1 (fr
EP2421712A4 (fr
Inventor
Christoper Toles
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Hewlett Packard Development Co LP
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Hewlett Packard Development Co LP
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Publication of EP2421712A1 publication Critical patent/EP2421712A1/fr
Publication of EP2421712A4 publication Critical patent/EP2421712A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
    • B41M5/508—Supports
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/56—After-treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper

Definitions

  • print media are often coated with one or more coatings to promote ink transfer and/or enhance image quality.
  • Some of these coatings incorporate inorganic pigments such as calcium carbonate and are specifically manufactured to receive ink from a printer or other printing devices. Differences in various print media characteristics are due to the differences in the type of coating used.
  • the present disclosure relates to an improved coated print media suitable for inkjet printing and a method for making the same. Coated inkjet print media are known from EP 8183322 A or US 2004/151894 A .
  • FIG. 1 schematically shows the structural framework of Zeolite A.
  • FIG. 2 schematically shows the structural framework of Zeolite X.
  • FIG. 3 is a scanning electron micrograph (SEM) image of co-milled precipitated calcium carbonate and Zeolite 4A according to an embodiment of the present disclosure.
  • FIG. 4 is a SEM image of unmilled precipitated calcium carbonate.
  • FIG. 5 is a SEM image of a mixture of unmilled precipitated calcium carbonate and unmilled Zeolite 4A particles.
  • FIG. 6 shows the relative rates of increase in viscosity based on the different amounts of Zeolite 4A added to a slurry containing precipitated calcium carbonate during milling.
  • PCC Precipitated calcium carbonate
  • selective chemical dispersants such as polyacrylates (Acumer 9300)
  • Acumer 9300 selective chemical dispersants
  • the dispersant is insufficient to keep up with the newly liberated surfaces and the liberated calcium ions, thereby resulting in an increase in viscosity.
  • An object of the present disclosure is to improve the viscosity performance during the grinding of the PCC-containing slurry and decreases the need for adding a large quantity of dispersant(s).
  • Another object of the present disclosure is to provide an improved coating formulation containing milled PCC particles that is useful for print media.
  • Zeolites are a class of aluminosilicate minerals characterized by a large amount internal porosity, and some have significant ion exchange capacity. More specifically, Zeolites are hydrated aluminosilicates of the alkaline and alkaline earth metals. There are more than 50 natural zeolites that have been identified, including analcime, chabazite, clinoptilolite, erionite, ferrierite, heulandite, laumontite, mordenite, and phillipsite. In addition, more than 150 zeolites have been synthesized. Natural and synthetic zeolites are used commercially because of their unique absorption, ionexchange, molecular sieve, and catalytic properties. Major markets for natural zeolites are pet litter, animal feed, horticultural applications (soil conditioners and growth media), and wastewater treatment. Major use categories for synthetic zeolites are catalysts, detergents, and molecular sieves.
  • Zeolites are made up of interlinked coordination tetrahedra of aluminum and silicon. They are usually identified by the silicon/aluminum ratio as well as the unit cell structure. These tetrahedra are linked into a number of complex shapes and "frameworks” that help define the various classes. There are 176 "Framework Types” recognized by the Internation Zeolite Association (http://www.iza-online.org/) for many zeolites, there are "extra-framework" metal cations which can be exchanged.
  • co-milling refers to milling the PCC particles in the presence of Zeolite particles as grinding adjunct.
  • co-milled PCC-Zeolite material is incorporated into coating compositions for print media, properties of the coated media are improved.
  • Zeolite A and Zeolite X are specific species of zeolite, which will now be described in detail.
  • Zeolite A is a Linde Type A framework (LTA) zeolite that can host sodium, potassium or calcium ions as the "extra-framework" ions which defines the pore size and gives the name to the zeolite.
  • Zeolite A has the general formula Me + x [(AlO 2 - ). (SiO 2 ) x ]y H 2 O, where Me + is a cation selected from the group consisting of potassium, sodium, and calcium, x and y are numerical values representing the general ratios of the atoms.
  • FIG. 1 schematically shows the structural framework of zeolite A. Zeolite A has a space-group designation of Pm-3m. It has a void fraction of 0.47. Zeolite A also has a cation exchange capacity of 5.48meq/g.
  • zeolite A with unique pore sizing that are useful for the intended purpose of the present disclosure:
  • Zeolite 4A (a sodium form of a synthetic zeolite of the Linde Type A form) is used. Zeolite 4A has approximately 4 ⁇ pore and the general chemical formula: Na 12 [Al 12 Si 12 O 48 ]27H 2 O.
  • Zeolite X is also effective for the purpose of the present disclosure owing to its cation exchange capacity and the size of its pores.
  • Zeolite X is a Faujasite Type (FAU) zeolite with the general formula: Na 87 [Al 87 Si 105 O 384 ] - 234H 2 O. It has a void fraction of 0.5 and an approximately 7.5 ⁇ to 8 ⁇ pore.
  • Zeolite X has a cation exchange capacity of 4.73meq/g.
  • FIG. 2 schematically shows the structural framework of Zeolite X.
  • co-milled particles of PCC and Zeolite A or Zeolite X (hereafter referred to as "Zeolite") are prepared by the following steps:
  • the viscosity level is preferably maintained at a level not higher than tenfold the starting slurry's viscosity.
  • the viscosity is maintained at 500 mPa ⁇ s (cP) or lower, more preferably, below 300 mPa ⁇ s (cP).
  • Suitable dispersants include polyacrylates, and polyphosphates, but are not limited thereto. It has been determined that adding more than about 1% of the dispersant may cause flocculation ("overdispersion"), thus, it is preferred that the amount of dispersant added does not exceed this upper limit.
  • the particle sizes of the starting (unmilled) PCC and Zeolite particles are larger than 400 nm in diameter, e.g., more than 1 ⁇ m.
  • Commercially available, unground PCC typically has a particle size of about 2 to 4 ⁇ m
  • commercially available, unground zeolite typically has a particle size of about 4 to 9 ⁇ m.
  • the co-milled particles of PCC and Zeolite as prepared according to the above co-milling process take on the appearance of structured aggregates with a more blocky appearance than the original PCC particles.
  • aggregates refers to clusters of several individual, finely ground particles of PCC and Zeolite that are smaller than the original, unmilled particles.
  • the average particle size of the co-milled particles in the final slurry is less than 400nm in diameter, preferably less than 300 nm, and more preferably 200nm or lower.
  • the average particle size of the co-milled particles refers to average particle size of the aggregates resulted from co-milling.
  • FIG. 3 is a scanning electron micrograph (SEM) image of the co-milled PCC and Zeolite 4A particles produced according to the milling process disclosed above. Shown for comparison, FIG. 4 is a SEM image of un-milled PCC particles. The co-milled PCC and Zeolite 4A particles take on the appearance of structured aggregates with a more blocky appearance than the original un-milled PCC.
  • FIG. 5 is a SEM image of a mixture of unmilled PCC and unmilled Zeolite 4A particles (prepared by physically mixing the particles without milling). By comparing FIG. 3 and FIG. 5 , it can be clearly seen that the mixed, unmilled PCC and Zeolite 4A particles are structurally different from the co-milled aggregates shown in FIG. 3 .
  • the present disclosure is also directed to an improved print media having a coating layer containing the co-milled particles of PCC and Zeolite, which have been prepared according to the co-milling method described above.
  • This coating layer is formed by applying an aqueous coating composition (in liquid form) onto one or both opposing surfaces of a media substrate, and subsequently drying the coating composition.
  • the resulting coating layer is useful as an ink-receiving layer on the print media.
  • An aqueous coating composition is formed by admixing the PCC-Zeolite slurry produced from the co-milling process described above with a binder and other additives to produce a cohesive coating layer.
  • the aqueous coating composition has the following formulation, in dry parts: 100 parts of co-milled PCC and Zeolite particles, the weight ratio of PCC to Zeolite being in the range of 5:1 to 20:1, more preferably 5:1 to 10:1; from 5 to 15 parts of at least one binder; and from 0 to 50 parts of additional coating additives.
  • a liquid-carrier preferably water, is added as necessary to this formulation to produce a coating liquid with a desirable solid-content and fluidity suitable for application using conventional-coating techniques.
  • Suitable binders for the aqeuous coating composition include, but are not limited to, polyvinyl alcohol and derivatives thereof, styrene-butadiene emulsion, acrylonitrile-butadiene latex, oxidized starch, cationized starch, esterified starch, enzymatically denatured starch and the like, gelatin, casein, soybean protein, cellulose derivatives including carboxy-methyl cellulose, hydroxyethyl cellulose and the like, acrylic emulsion, vinyl acetate emulsion, vinylidene chloride emulsion, polyester emulsion, polyvinylpyrrolidone, polyurethanes, polyamide resins, and combinations thereof.
  • Additional coating additives for the aqeuous coating composition include conventional additives such as surfactants, defoamers, humectant, dispersing agents, biocides, UV/light protectants, fade-control agents, fillers, preservatives (e.g. antioxidants), buffers, pH modifiers, slip agents, stabilizers, ink fixatives, cross-linking agents, and combinations thereof without restriction.
  • conventional additives such as surfactants, defoamers, humectant, dispersing agents, biocides, UV/light protectants, fade-control agents, fillers, preservatives (e.g. antioxidants), buffers, pH modifiers, slip agents, stabilizers, ink fixatives, cross-linking agents, and combinations thereof without restriction.
  • the pH of the slurry containing the co-milled PCC and Zeolite material may need to be adjusted before incorporating the slurry into the coating composition if the pH is too high, e.g. 12 or greater.
  • the pH of the coating composition may be adjusted after the co-milled PCC and Zeolite material has been incorporated into the coating composition.
  • the pH should be adjusted to no less than about 8; preferably, the pH is adjusted to about 9 to 9.5.
  • the pH may be adjusted using any suitable acid, e.g. acetic acid, or any suitable buffer, e.g. a sodium carbonate/ sodium bicarbonate buffer system.
  • the media substrate of the improved coated media may take the form of a media sheet or a continuous web suitable for use in an imaging device such as an inkjet printer.
  • the media substrate may be a paper base manufactured from cellulose fibers. More specifically, the paper base may be produced from chemical pulp, mechanical pulp, thermal mechanical pulp and/or the combination of chemical and mechanical pulp.
  • the paper base may also include conventional additives such as internal sizing agents and fillers.
  • the internal agents are added to the pulp before it is converted into a paper web or substrate. They may be chosen from conventional internal sizing agents for printing papers.
  • the fillers may be any particular types used in conventional paper making. As a non-limiting example, the fillers may be selected from calcium carbonate, talc, clay, kaolin, titanium dioxide and combinations thereof.
  • the media substrate may be an uncoated raw paper base or a precoated paper base.
  • the coating layer containing the co-milled PCC-Zeolite material is useful as the ink-receiving layer on the print media. It shall be understood that one or more intermediate layers may be formed between such ink-receiving layer and the media substrate (whether coated or uncoated).
  • a number of conventional coating techniques may be utilized to apply the aqueous coating composition described above onto the media substrate.
  • Representative techniques include size press coating, slot die coating, curtain coating, blade coating, roller coating, Meyer rod coating, air knife coating, gravure application, air brush application, and spraying.
  • Suitable size presses include puddle-sized press, film-sized press and the like.
  • the puddle-sized press may be configured to have horizontal, vertical, or inclined rollers.
  • the film-sized press may include a metering system, such as gate-roll metering, blade metering, Meyer rod metering, or slot metering.
  • the coating composition may be applied to the paper substrate using an off-line or on-line coater.
  • the coating composition may be applied to a paper base by an on-line size press during the surface sizing stage of a papermaking process.
  • the coated media substrate is dried using any suitable drying method such as hot air or convection drying, conduction drying, or radiant-energy drying such as infrared heating.
  • the coated media substrate may be further calendered using a conventional calendering machine with rollers in order to increase the glossiness of the coating.
  • the calendering machine may be a separate super-calendering machine, an on-line, soft-nip calendering machine, or an off-line, soft-nip calendering machine.
  • having a coating containing the co-milled PCC-Zeolite material as the ink-receiving layer improves the ink solvent absorption rate during printing, without reducing print quality, as compared to having a coating with only milled PCC (without zeolite).
  • the coating containing the co-milled PCC-Zeolite material is less yellow and glossier than a coating with only milled PCC.
  • a starting slurry of precipitated calcium carbonate and zeolite 4A was loaded into a Netzsch Mini Pur bead mill equipped with an approximately 200ml grinding chamber, lined with polyurethane (Netzsch USA).
  • the slurry had the following formulation:
  • the slurry material as initially mixed, started with a Brookfield viscosity at 100rpm of approximately 6 mPa ⁇ s (cP). After approximately 1 hour of milling, the particle size of co-milled particles (i.e. aggregates) was reduced to 345nm and the viscosity has increased to 28 mPa ⁇ s (cP) (100rpm). With continued grinding, the viscosity increased further to 231 (cP) and the particle size started to increase. At this point Acumer 9300 (a polyacrylate dispersant available from Rohm and Hass) was added in an attempt to keep the viscosity below 300 (cP) and to maintain a consistent decrease in particle size. This required the sum total addition of 3.6g of Acumer 9300 to achieve a final particle. size of 260nm after 3 hours and 48 minutes of milling.
  • the initial viscosity of the slurry was 119 (cP) (at 100rpm). After 30 minutes of grinding the viscosity climbed to 231 (cP) while the PCC particle size was at nearly 4 ⁇ m. At this point, significant amount of additional dispersant (Acumer 9300, a polyacrylate dispersant) was added. Ultimately, it required the addition of 6.4g of Acumer 9300 to maintain a sufficiently low viscosity to continue the grinding. After 5 hours and 20 minutes the particle size finally fell to 270nm.
  • the Brookfield viscosity at 100rpm of the slurry containing the co-milled PCC-Zeolite material can be maintained at less than 50% of the viscosity of milled PCC alone (without Zeolite).
  • the amount of dispersant required during grinding is reduced by more than half when Zeolite is present.
  • the coating samples were applied onto paper sheets using a #40 Meyer rod (4 replicates, 3 measurements each).
  • the coated sheets were calendered at 13,8 ⁇ 10 6 Pa/43°C 2000 psi/110°F), 3 passes against a heated, chrome calendar roller.
  • the final average gloss value was measured to be 25.6 at 60° gloss.
  • Table 1 Sample ID Amount (g) Opacarb A4 Slurry % Solids PCC Slurry Amount (g) Zeolite 4A added 6257-30A 409.8 29.58% 12.28 6257-30B 409.8 29.58% 6.24 6257-30C 409.8 29.58% 0
  • the samples were ground in the Netzsch MiniPur bead mill for several hours and approximately every hour the viscosity was measured using a Brookfield viscometer (at 100rpm).
  • FIG. 6 shows the relative rates of increase of viscosity as compared to the amount of Zeolite 4A added during the first three hours the milling process of Example 4.
  • the coating formulations were coated onto a polyethylene-extrusioncoated photobase paper (a conventional photo paper) using a #65 Meyer rod.
  • the samples were then measured using an X-Rite Spectrodensitometer colorimeter to assess L*a*b* values (a color coding system developed by Commission Internationale de L'Éclairage (CIE))
  • the coated paper sheets made in EXAMPLE 3 were printed with a pigment ink using a Hewlett-Packard inkjet printer. Comparative coated paper sheets were made according to the method of EXAMPLE 3 except that 100 parts of milled PCC only was used in the coating formulation, and these sheets were subsequently printed using the same inkjet printer. The printed sheets were compared against a commercially available printed, glossy brochure media. The results are shown below in Table 4. Color gamut is measured as the volume of the CIE L*a*b* space based on the X-Rite colorimetry measurement of 8 color blocks printed on the paper. Coalescence (graininess level) is measured by a visual ranking scale with 5 being the best (no coalescence) and 1 being the worst. Table 4.
  • the coated paper samples from EXAMPLE 3 were analyzed using a Bristow Wheel ink absorption tester (as described in Bristow, J.A., 1967, Liquid absorption into paper during short time intervals, Svensk Paperstidning, v70, pp623-629 ).
  • a Bristow Wheel ink absorption tester as described in Bristow, J.A., 1967, Liquid absorption into paper during short time intervals, Svensk Paperstidning, v70, pp623-629 .
  • a special type of ink jet head box is initially filled with a metered amount of the fluid under study. This head box is then placed in contact with the porous ink-receiving surface under study, and this surface is attached to a rotating wheel.
  • a starting slurry of precipitated calcium carbonate and a calcium-containing zeolite (Clinoptilolite) was loaded into a Netzsch Mini Pur bead mill equipped with an approximately 200ml grinding chamber, lined with polyurethane (Netzsch USA).
  • the slurry had the following formulation:
  • the the slurry material as initially mixed, started with a Brookfield viscosity at 100rpm of less than 5 mPa ⁇ s (cP) After approximately 110 minutes of milling, the viscosity had increased to 400 mPa ⁇ s (cP) (at 100rpm). With continued grinding of 25 minutes, the viscosity increased further to 845 mPa ⁇ s (cP). This is approximately twice the viscosity of PCC co-milled with the preferred Zeolite 4A as seen in Example 1.
  • a weight range of approximately 1 wt% to about 20 wt% should be interpreted to include not only the explicitly recited concentration limits of 1 wt% to about 20 wt%, but also to include individual concentrations such as 2 wt%, 3 wt%, 4 wt%, and sub-ranges such as 5 wt% to 15 wt%, 10 wt% to 20 wt%, etc.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Paper (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Claims (14)

  1. Support d'impression revêtu pour jet d'encre comprenant :
    - un substrat de support ;
    - une couche de revêtement formée sur au moins une surface du substrat de support, ladite couche de revêtement comprenant au moins un liant et des particules co-broyées de carbonate de calcium précipité et de zéolite,
    ladite zéolite étant choisie dans le groupe consistant en une Zéolite A, une Zéolite X et une combinaison de celles-ci, et
    les particules co-broyées étant obtenues par broyage de carbonate de calcium précipité en présence de zéolite et revêtant la forme d'agrégats, et la dimension moyenne de particule desdits agrégats étant de 400 nm ou moins.
  2. Support d'impression revêtu selon la revendication 1, dans lequel ladite zéolite est une Zéolite A et est choisie dans le groupe consistant en une Zéolite 3A, une Zéolite 4A et une Zéolite 5A.
  3. Support d'impression revêtu selon la revendication 2, dans lequel ladite Zéolite A est une zéolite 4A ayant la formule générale : Na12[Al12Si12O48]·27H2O.
  4. Support d'impression revêtu selon la revendication 1, dans lequel le rapport en poids du carbonate de calcium précipité à la zéolite se situe dans la plage de 5:1 à 20:1.
  5. Support d'impression revêtu selon la revendication 1, dans lequel le rapport en poids du carbonate de calcium précipité à la zéolite se situe dans la plage de 5:1 à 10:1.
  6. Support d'impression revêtu selon la revendication 1, dans lequel ladite couche de revêtement comprend 100 parties sèches desdites particules co-broyées de carbonate de calcium précipité et de zéolite et 5 à 15 parties dudit liant.
  7. Support d'impression revêtu selon la revendication 1, la dimension moyenne de particule desdits agrégats étant de 200 nm ou moins.
  8. Support d'impression revêtu selon la revendication 1, dans lequel ledit substrat de support est un substrat de papier contenant des fibres de cellulose.
  9. Procédé de formation d'un support d'impression revêtu pour jet d'encre, comprenant :
    (a) se procurer une bouillie aqueuse de départ contenant des particules de carbonate de calcium précipité non broyées et des particules de zéolite non broyées, ladite zéolite étant choisie dans le groupe consistant en une Zéolite A, une Zéolite X et une combinaison de celles-ci ;
    (b) soumettre la bouillie de départ à un broyage dans un dispositif de broyage pour réduire la dimension moyenne de particule de carbonate de calcium précipité et de zéolite, ce par quoi un broyage de particules non broyées de carbonate de calcium précipité et de zéolite produit des particules co-broyées qui revêtent la forme d'agrégats ayant une dimension moyenne de particule de 400 nm ou moins, et la viscosité de la bouillie augmente à mesure que le broyage se poursuit ;
    (c) lorsque la dimension moyenne de particule commence à augmenter avec une augmentation du broyage, ajouter un dispersant dans une quantité allant jusqu'à environ 1 % en poids sur la base du poids total de la bouillie pour abaisser la viscosité à un niveau suffisant pour maintenir une diminution cohérente de la dimension de particule ;
    (d) préparer une composition aqueuse de revêtement qui comprend lesdites particules co-broyées de carbonate de calcium précipité et de zéolite et au moins un liant ;
    (e) appliquer ladite composition de revêtement sur au moins une surface d'un substrat de support ; et
    (f) sécher ladite formulation de revêtement.
  10. Procédé selon la revendication 9, dans lequel ladite zéolite est une Zéolite 4A ayant la formule générale : Na12[Al12Si12O48]·27H2O.
  11. Procédé selon la revendication 9, dans lequel le rapport de poids du carbonate de calcium précipité à la zéolite dans la bouillie de départ se situe dans la plage de 5:1 à 10:1.
  12. Procédé selon la revendication 9, dans lequel la bouillie de départ a une concentration en matières solides se situant dans la plage de 10 % à 30 % en poids sur la base du poids total de la bouillie.
  13. Procédé selon la revendication 9, dans lequel les particules de carbonate de calcium précipité non broyées et les particules de zéolite non broyées dans la bouillie de départ ont des dimensions de particule qui sont supérieures à 1 µm, et le broyage est effectué conformément aux étapes (b) et (c) jusqu'à ce que les particules co-broyées aient une dimension moyenne de particule de moins de 400 nm.
  14. Procédé selon la revendication 9, dans lequel la viscosité de la bouillie durant le broyage conformément aux étapes (b) et (c) ne dépasse pas dix fois la viscosité de la bouillie de départ.
EP20090843775 2009-04-23 2009-04-23 Supports d'impression revêtus et leur procédé de fabrication Not-in-force EP2421712B1 (fr)

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US9308080B2 (en) 2010-03-10 2016-04-12 Smith & Nephew Inc. Composite interference screws and drivers

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EP2671723B1 (fr) 2012-06-06 2015-03-04 Canon Kabushiki Kaisha Support d'enregistrement
EP3341207B1 (fr) 2015-12-10 2020-10-28 Hewlett-Packard Development Company, L.P. Support d'impression revêtu
EP3341212B1 (fr) 2015-12-10 2020-09-30 Hewlett-Packard Development Company, L.P. Supports d'impression revêtus
EP3246172A1 (fr) * 2016-05-19 2017-11-22 Arctic Paper Grycksbo AB Article imprimable pour impression à jet d'encre
WO2023142139A1 (fr) * 2022-01-31 2023-08-03 Heubach Holding Switzerland Ltd Couche de réception d'encre pigmentée pour panneaux de construction décoratifs

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EP0818322B1 (fr) * 1996-07-12 1999-10-06 Oji Paper Company Limited Feuille pour l'enregistrement par jet d'encre avec une couche à forte brillance
US5997625A (en) 1998-05-01 1999-12-07 Engelhard Corporation Coating pigment for ink-jet printing
TW200734385A (en) * 2000-02-23 2007-09-16 Ajinomoto Kk Flame-retarded thermoplastic resin composition
DE50005683D1 (de) * 2000-04-11 2004-04-22 Degussa Streichfarben für Inkjet-Medien
CN1169675C (zh) * 2000-10-05 2004-10-06 王子制纸株式会社 喷墨记录纸
US6610136B2 (en) * 2001-04-03 2003-08-26 Thiele Kaolin Company Pigments for ink jet paper
JP2003072233A (ja) * 2001-06-21 2003-03-12 Tomoegawa Paper Co Ltd インクジェット記録シート
DE10203047A1 (de) * 2002-01-26 2003-08-07 Degussa Kationische Mischoxid-Dispersion, Streichfarbe und tintenaufnehmendes Medium
CN100398746C (zh) 2002-03-22 2008-07-02 加讯发展有限公司 填料组合物、其制备方法及用途
JP3680824B2 (ja) 2002-08-05 2005-08-10 王子製紙株式会社 分散安定化されたインクジェット記録体用塗液及びそれを用いたインクジェット記録体
US20040151894A1 (en) 2002-09-09 2004-08-05 Oji Paper Co., Ltd. Aqueous dispersion comprising inorganic pigment-cationic resin composite fine particles and ink jet recording material containing same
JP2006256026A (ja) * 2005-03-16 2006-09-28 Konica Minolta Photo Imaging Inc インクジェット記録用シートおよびその製造方法

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Publication number Priority date Publication date Assignee Title
US9308080B2 (en) 2010-03-10 2016-04-12 Smith & Nephew Inc. Composite interference screws and drivers

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CN102414026A (zh) 2012-04-11
US9944106B2 (en) 2018-04-17
EP2421712A1 (fr) 2012-02-29
US20170151822A1 (en) 2017-06-01
EP2421712A4 (fr) 2012-10-03
WO2010123505A1 (fr) 2010-10-28
CN102414026B (zh) 2014-01-22
US20120021205A1 (en) 2012-01-26
US10166805B2 (en) 2019-01-01

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